Petr Cech of Arsenal during the Arsenal Training Session at London Colney on...Petr Cech of Arsenal during the Arsenal Training Session at London Colney on October 31, 2016 in St Albans, England.LessMore

Shkodran Mustafi and Mesut Ozil of Arsenal during a training session at London...Shkodran Mustafi and Mesut Ozil of Arsenal during a training session at London Colney on October 31, 2016 in St Albans, England.LessMore

Shkodran Mustafi and Mesut Ozil of Arsenal during a training session at London...Shkodran Mustafi and Mesut Ozil of Arsenal during a training session at London Colney on October 31, 2016 in St Albans, England.LessMore

Arsenal's head coach Arsene Wenger gives a press conference on the eve of the UEFA...Arsenal's head coach Arsene Wenger gives a press conference on the eve of the UEFA Champions League group A football match between Ludogorets and Arsenal in Sofia on October 31, 2016. / AFP / DIMITARLessMore

Arsenal's head coach Arsene Wenger gives a press conference on the eve of the UEFA...Arsenal's head coach Arsene Wenger gives a press conference on the eve of the UEFA Champions League group A football match between Ludogorets and Arsenal in Sofia on October 31, 2016. / AFP / DIMITARLessMore

Arsenal's French forward Olivier Giroud gives a press conference on the eve of the UEFA Champions League group A football match between Ludogorets and Arsenal in Sofia on October 31, 2016. / AFP / DIMITAR

Arsenal's French forward Olivier Giroud gives a press conference on the eve of the...Arsenal's French forward Olivier Giroud gives a press conference on the eve of the UEFA Champions League group A football match between Ludogorets and Arsenal in Sofia on October 31, 2016. / AFP / DIMITARLessMore

Arsenal's head coach Arsene Wenger (R) and Arsenal's French forward Olivier Giroud give a press conference on the eve of the UEFA Champions League group A football match between Ludogorets and Arsenal in Sofia on October 31, 2016. /...More

Arsenal's head coach Arsene Wenger (R) and Arsenal's French forward Olivier Giroud...Arsenal's head coach Arsene Wenger (R) and Arsenal's French forward Olivier Giroud give a press conference on the eve of the UEFA Champions League group A football match between Ludogorets and Arsenal in Sofia on October 31, 2016. / AFP / DIMITARLessMore

Arsenal's head coach Arsene Wenger gives a press conference on the eve of the UEFA...Arsenal's head coach Arsene Wenger gives a press conference on the eve of the UEFA Champions League group A football match between Ludogorets and Arsenal in Sofia on October 31, 2016. / AFP / DIMITARLessMore

Arsenal's head coach Arsene Wenger (R) and Arsenal's French forward Olivier Giroud give a press conference on the eve of the UEFA Champions League group A football match between Ludogorets and Arsenal in Sofia on October 31, 2016. /...More

Arsenal's head coach Arsene Wenger (R) and Arsenal's French forward Olivier Giroud...Arsenal's head coach Arsene Wenger (R) and Arsenal's French forward Olivier Giroud give a press conference on the eve of the UEFA Champions League group A football match between Ludogorets and Arsenal in Sofia on October 31, 2016. / AFP / DIMITARLessMore

Arsenal's head coach Arsene Wenger gives a press conference on the eve of the UEFA...Arsenal's head coach Arsene Wenger gives a press conference on the eve of the UEFA Champions League group A football match between Ludogorets and Arsenal in Sofia on October 31, 2016. / AFP / DIMITARLessMore